Gettie is a JS object coverage tool.
Originally it developed to extract redux store coverage to find out which store branches were not used till the application works.
const state = {
foo: 123,
bar: [456, { baz: 789 }],
quux: 123
};
console.log(state.quux);
console.log(state.bar[1].baz);It helps to find out that branches foo and bar[0] from the state were not used.
It may motivate you to think about what you can do to remove the unused branches.
For more information, please, see core package.